C++ High Performance

Initializing variables in capture

As seen in the previous example, the capture scope initializes member variables in the corresponding class. This means that we can also initialize member variables inside a lambda, which are only visible from inside the lambda:

Lambda function...	...corresponding class:
auto func = [c=std::list<int>{4,2}](){ for(auto v : c) std::cout << v;};func();// Output: 42	class Func {public: Func() : c{4, 2} {} auto operator()()const->void{ for(auto v : c) std::cout << v; }private: std::list<int> c;};auto func = Func{};func();// Output: 42